ootori saki

Saki Ootori is a mysterious young woman who confronted Mizuho on the school balcony. She grasped Mizuho and told her to be quiet, warning that otherwise she wouldn't hear 'somebody's song'. At that moment, a girl, one of the students, fell to her death. Saki acted as if she was fully aware of what was happening, implying she might be responsible for the fallen girl's death. Afterwards, she called Mizuho by her name, much to Mizuho's surprise. Saki explained that there was no one in the school who didn't know Mizuho's name because she was a survivor of the tragedy. Then, she proclaimed that the truth of the incident involving Mizuho's family was different from what everyone believed. Before leaving, she introduced herself and told Mizuho that they were the same.